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Fig. 7 When the trigger and/or pushing lever are released
The air pressure on the upper surface of the Exhaust Valve < 2 > is
released, and the exhaust valve is pushed upward by the air pressure
within the cylinder. This opens the Exhaust Vent < 3 >, and the air
pressure in the cylinder is discharged from the nailer.
Air pressure is discharged from the upper end of
the cylinder, and the cylinder is pushed upward by
the air pressure on the lower surfaces of the
flanges and the force of the Cylinder Spring < 5 >.
This closes the upper end of the cylinder, and
blocks compressed air from entering the cylinder.
At the time the piston returns, any remaining air pressure at the lower
end of the piston is discharged through the clearance between the
Piston Bumper < 9 > and the Driver Blade < 7 >.
When the air pressure at the upper side
of the piston lowers, the air pressure
within the Return Air Chamber < 8 >
pushes the piston upward.
(NOTE) If the clearance were larger, the
piston would not return: if it were
smaller, driving force would be
decreased.
When the trigger is released, the trigger valve closes
and the air pressure within the valve air passage is
discharged through Valve Exhaust Vent I .
In addition, when the pushing lever is lifted from
the wood surface, the safety valve closes, and
the air pressure within the valve air passage is
discharged through Valve Exhaust Vent II .
(The illustration shows both the trigger and
pushing lever released.)
Valve Exhaust Vent II
Valve Exhaust Vent I
Summary of Contents for NT 65A3
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